It is not possible to edit wiki macro contents while another editor is typing in a realtime session

Steps to reproduce :

• Start with an instance of XWiki 13.10.7 ; with realtime setup and 2 users
• Create a blank page
• Edit the page with the user 1 ; which will start a new realtime session
• Edit the page with the user 2 ; which will make him join the realtime session
• In the browser console of the user 1, run easyTest() to start writing some characters. The characters should start to show up in the editor of user 2 ; along with some errors in the console as described in XWIKI-20052.
• In the browser console of user 2, create a couple blank lines, insert an info macro. Make sure that the macro is inserted in block mode, so that its wiki macro content can be edited easily
• Still as the user 2, try to edit the content of this macro.

Observed : the user 2 looses focus on the wiki macro content every time an update of the content comes from the user 1. As the user 1 is continuously typing, the user 2 cannot really edit the wiki macro content.

If we let that go for some time, I found out that the editing session can break, however it's still not clear to me why and how it happens.

Environment : Debian Testing (bookworm) with Firefox 102
Tested on a Jetty / HSQLDB instance ; also reproduced on the XWiki SAS intranet running Apache 2 HTTPd and Tomcat 9